The L2TP protocol version used for this L2TP endpoint, either version 2 or 3.
Important: Ethernet tunnels are only possible with version 3. In this case, be sure to set the protocol "L2TPv3" here.
		- SNMP ID:
 - 2.2.35.11
 - Console path:
 - Setup > WAN > L2TP-Endpoints
 - Possible values:
 - L2TPv2
 - Layer 2 Tunneling Protocol Version 2
 - L2TPv3
 - Layer 2 Tunneling Protocol Version 3